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Question 43975

posted 10 months ago

3. For a normal distribution with a mean of u = 100 and a standard deviation of o = 10,find each of the following probabilities:
Р(X>107)P(X<75)Р(X<120)Р(95<X<105)

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Question 43973

posted 10 months ago

1. We wish to standardize a distribution which currently has a population mean of 45and a standard deviation of 7 to one where the population mean is 100 and standard deviation is 20. If a subject obtained a score of 42 on the current distribution, what will his score be on the new distribution?

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Question 43974

posted 10 months ago

for a sample with m=38 sigma =12 find x value that corresponds to each of the following z scores
-0.25,-1.50,0.50,2.00

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Question 44404

posted 10 months ago

A random variable X has a probability density function of the form
f(x)=2 e^{-2 x} u(x)
Using the characteristic function, find the first and second moments.

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Question 44403

posted 10 months ago

We capture two independent captures from the same light source on a radiometer. The settings and conditions are identical between the two captures. The captures are random variables X and Y.However, noise is present in each collection and each collection has a different noise realization.This can be modeled as I+N, where I is the irradiance incident on the radiometer, and is equal for each capture. However, the noise, N, is different. So we have X = 1+ Nx, and Y = 1+ Ny. I and N are both random variables as well and the noise realizations and irradiance are independent with respect to each other. We can also assume that the variance of the noise terms Nx and Ny are equal. Find the correlation coefficient between the two radiometer captures X and Y, in terms of the variance of I and the variance of the Noise terms.

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Question 44402

posted 10 months ago

A gas station sells three grades of gasoline: regular, mid-grade, and premium. The price for each gasgrade are $3.03, $3.34, and $3.67 per gallon respectively. Let X1, X2, X3 be the amount of gas sold of each grade on a particular day. The amount of gas of each grade sold is independent and they have mean values of µx, = 1000, µx, = 500, and µX, = 300 and ox, = 100, ox, = 80, and ox, = 50
a) Find the mean revenue from all gas sales.bl Calouletefromoolo
b) Calculate the variance from all gas sales.
c) Calculate the standard deviation from all gas sales.

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Question 45131

posted 10 months ago

9. (a) Jenny has six textbooks from her college courses. She plans on bringing three of these textbooks with her in a road trip. In how many ways can she select these three books?
(b) Board of Directors must appoint a president, a vice president, and a treasurer.There are 5 qualified candidates. In how many ways can the officers be appointed?

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Question 45124

posted 10 months ago

The vine producer should send 80 bottles of vine to supermarket. Before he ships the boxes he decided to check 5 different bottles. Describe how he should select these 5 bottles using systematic selection.

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Question 45126

posted 10 months ago

4.The Box-Plot below shows the grade distribution of a quiz for asample of 160 students.Answer each question based on the given information and explain your answer in each case.
(а)Which interval has the fewest students?
• 30 - 50
• 50 - 70
cannot be determined
70-90
How many students in the sample are in the score band between 50 and 70?

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Question 45132

posted 10 months ago

For the given below Discrete Distribution, calculate Expected Value (Mean).

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